VulnerabilityPublished 24 Feb 2026

CVE-2026-23859: Dell Wyse Management Suite · Client-Side Enforcement of Server-Side Security

Affects Dell Wyse Management SuiteSource CVE Database V5

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Not known to be exploited · CVSS 2.7 Low : upgrade to 5.5 when convenient.

Data as of 29 Oct 2026, 19:04 UTC

CVSS 3.1 base score

2.7Low

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.2% chance of exploitation in 30 days – higher than 21% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 5.5

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N

Attack Vector: Network
Attack Complexity: Low
Privileges Required: High
User Interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: Low
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: High: The attacker is authorized with (i.e., requires) privileges that provide significant (e.g., administrative) control over the vulnerable component that could affect component-wide settings and files.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: None: There is no loss of confidentiality within the impacted component.
Integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact on the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 24 Feb 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Dell Wyse Management Suite to 5.5.

Affected software

Product	Affected	Fixed in
DellWyse Management Suite	Affected ≥ N/A, < 5.5	Fixed in 5.5

AI-suggested

To mitigate CVE-2026-23859, organizations should upgrade Dell Wyse Management Suite to version 5.5 or later, where the vulnerability has been addressed by enforcing security controls server-side. Until upgrading is possible, restrict remote access to the management suite to trusted administrators only and implement strong network segmentation to limit exposure. Monitor logs and management activities for unusual or unauthorized changes that could indicate exploitation attempts. Employ multi-factor authentication and strict access controls to reduce the risk of high-privileged account compromise. Additionally, review and harden client configurations to minimize the impact of client-side manipulation. Regularly audit and validate that security policies are enforced on the server side and not solely dependent on client-side controls. Engage with Dell support for any available patches or workarounds and stay informed about updates related to this vulnerability.

Description

Dell Wyse Management Suite, versions prior to WMS 5.5, contain a Client-Side Enforcement of Server-Side Security vulnerability. A high privileged attacker with remote access could potentially exploit this vulnerability to Protection mechanism bypass.

Impact

The impact of CVE-2026-23859 is limited but notable in environments using Dell Wyse Management Suite for thin client management. Since exploitation requires high privileges and remote access, the vulnerability does not increase risk for low-privileged users or external attackers without credentials. However, a malicious insider or attacker who has already gained elevated access could exploit this flaw to bypass protection mechanisms, potentially altering management configurations or policies. This could lead to unauthorized changes in device management, weakening the security posture of thin client deployments. Although confidentiality and availability are not directly impacted, integrity of management operations is at risk. Organizations relying heavily on Wyse Management Suite for endpoint control may face increased risk of unauthorized configuration changes, which could cascade into broader security issues if not detected. The absence of known exploits and the low CVSS score suggest limited immediate threat, but the vulnerability should be addressed promptly to prevent potential misuse.

CWE-602Client-Side Enforcement of Server-Side Security (opens in a new tab)
Class weaknessLikelihood of exploit: MediumOWASP Top 10 A06:2025: Insecure Design (opens in a new tab)
The product includes a server that relies on the client to implement a protection mechanism that is intended to protect the server.
Architecture and Design
For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely.
Architecture and Design
If some degree of trust is required between the two entities, then use integrity checking and strong authentication to ensure that the inputs are coming from a trusted source.
OWASP Cheat Sheets
Docker Security (opens in a new tab)
Abuse Case (opens in a new tab)
Deserialization (opens in a new tab)
Access Control (opens in a new tab)
Authorization Testing Automation (opens in a new tab)
OWASP ASVS 4.0.3
V1.4.1 (opens in a new tab)
V1.5.3 (opens in a new tab)
V4.1.1 (opens in a new tab)
Attack patterns
Manipulating Hidden Fields (opens in a new tab)
Create Malicious Client (opens in a new tab)
Removing Important Client Functionality (opens in a new tab)
Removing/short-circuiting 'Purse' logic: removing/mutating 'cash' decrements (opens in a new tab)
Accessing/Intercepting/Modifying HTTP Cookies (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

dell.com/support/kbdoc/en-us/000429141/dsa-2026-103 (opens in a new tab)

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 4 Mar 2026, 01:49 UTC

WeaknessesCWE-602

Technical details

References

Community reviews

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